JPH1066655A - Hot water purification device for bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To purify hot water even for an already installed bathtub by attaching a tank unit to the inner wall part of the bathtub, taking out dirty hot water from the tank unit thorough the circulation port of the bathtub to the outside of the bathtub, purifying it and returning it from the circulation point to the inside of the bathtub. SOLUTION: When post-heating is started by a hot water supply equipment, the hot water inside a hot water purifier is sent through a suction port 16 and a return pipe 73, etc., to a heat exchanger for the post-heating, heated to a set temperature, and then, returned through the outgoing pipe 67 of the heat exchanger for the post-heating or the like from a discharge port 17 to the inside of the bathtub 4 again. At this time, the water level of the hot water inside the tank unit 5 is lowered correspondingly to the suction flow rate of a circulation pump, a head is generated between the hot water 23 inside the bathtub 4 and the hot water 23 inside the bathtub 4 is made to flow from a first opening part to the inside of the hot water purifier by the head. Thus, the surface water of the hot water 23 inside the bathtub 4 is efficiently made to flow into the hot water purifier and rubbish such as scurf and hair, etc., floating on a hot water surface is efficiently recovered by a filter 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub hot water purifying apparatus installed in a bathtub for easily purifying hot water.

[0002]

2. Description of the Related Art Conventionally, a bath apparatus supplies hot water to a bath tub to perform additional heating, and also supplies hot water to a bath tub through a circulation port formed in a side wall near the bottom of the bath tub and purifies the hot water with a filter. Then, there is one that is recirculated to the bathtub. When hot water is taken out from such a circulation port, floating substances on the hot water side cannot be purified, and there is a sense of uncleanness. Therefore, there was a problem that the amount of hot water increased.

[0003] The applicant of the present invention purifies the bath surface of the bath,
An application has been filed for a hot water purification bath and a method of purifying bath water by using the bath (see Japanese Patent Application Laid-Open No. 7-68253).

FIGS. 21 and 22 show a bath tub for purifying a hot water surface according to the prior application. In this hot water purification tank, a concave portion 103 having a predetermined volume is integrally formed at a predetermined position on an inner wall surface 102 of a bathtub 101, and a detachable cover 10 is formed in the concave portion 103.
4 to form a garbage collection chamber 105 separated from the inside of the bathtub 101.
An elongated hole 107 for drawing hot water 106 in the bathtub 101 into the trash collection chamber 105 is formed, and a guide rail 108 guides a back surface of the cover 104 by a guide rail 108 and a skirt portion 109 thereof. Is opening 1
07 is provided on a float 110 having an L-shaped cross section which slides up and down so as to cover 07.

[0005] At the lower end of the cover 104, a drainage gap 111 communicating the inside of the bathtub 101 and the inside of the dust collection chamber 105 is provided.
In addition, a suction port 112 for discharging hot and cold water sucked into the dust collection chamber to the outside is provided at a lower bottom portion of the dust collection chamber 105, and an inner wall surface 102 of the bathtub 101 is formed.
A discharge port 113 for recirculating the purified hot water back into the bathtub is provided at a desired position.

[0006]

However, this bath surface purification bathtub is a modified bathtub, and it is necessary to replace the bathtub itself when purifying hot water in an existing bathtub.

[0007] In this bath, the cover 10
4, only one opening 107 is formed.
7, the hot water 106 in the bathtub is sucked. On the back side of the opening 107, it is necessary to provide a float 110 that slides up and down so that the skirt 109 covers the opening 107.
If the vertical dimension of the hole 7 is too long, the skirt 109 of the float 110 will hit the bottom of the refuse collection chamber 105 when the level of the molten metal drops, and the float 110
Cannot go down any further. Therefore,
Due to the operation of the float 110, the vertical dimension of the opening 107 must be not more than half the total length of the cover 104 in the vertical direction as shown in FIG.

[0008] In this bath, the opening 107 is completely exposed to the surface of the bath when the level of the hot water stretched in the bath falls to almost the center of the cover 104, and the water level is lower than the opening 107. When you enjoy bathing, you can not purify dirt such as dirt and hair on the surface of the bath and enjoy a clean bath, and at the water level above the circulation port of the bathtub, according to the bather's favorite water level, You must realize a clean bath.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bath water purifying apparatus which can purify hot water even with an existing bath tub and expands the range of purifiable water levels.

[0010]

According to the bath water purifying apparatus of the present invention, a tank unit (5) is mounted on the inner wall of the bath tub, and hot water is dropped from the surface of the bath unit to remove dirty water. The tank unit is taken out of the bathtub through the circulation port (circulation fitting 22) of the bathtub (4) and purified, and is returned into the bathtub from the circulation port (circulation fitting 22).

That is, the bath water purifying apparatus of the present invention is installed on the inner wall of the bathtub and connected to a circulation port for taking out the hot water of the bathtub to the outside.
A long hole (first opening 5A) which is opened in the tank unit in a vertical width from a maximum water level of the bathtub to a water level at which the circulation port is submerged so as to take hot water in the bathtub into the tank unit side. , A second opening 5B) and an opening / closing plate (opening / closing lid 1) provided in the tank unit for moving up and down in response to a change in the water level of the bathtub to open and close the elongated hole.
4) and purifying means (introducing pipe 67, return pipe 73, sterilizer 76, filter 77) for purifying the hot and cold water that has entered the tank unit through the circulation port to the outside of the bathtub to purify the hot water and then returning the hot water to the inside of the bathtub. , A circulation pump 80).

With this configuration, the tank unit is attached to the inner wall of the bathtub without any change in the form of the bathtub, and the tank unit and the circulation port are connected to each other, so that the tank unit can be connected to the bath surface from the molten metal surface. The hot water is dropped, dirty hot water is taken out of the bathtub through the circulation port of the bathtub from this tank unit and purified, and the purified water is returned into the bathtub through the circulation port, so that purification and circulation of the hot water can be easily performed.

In the bath water purifying apparatus for a bathtub according to the present invention, when the water level of the tank unit is equal to the water level in the bathtub when the water level does not change on the bathtub side, and when the water level changes on the bathtub side, It is characterized in that it is set to change according to the change. By adopting such a configuration, dirt on the hot water side can be guided to the tank unit side in the tank unit according to the water level fluctuation in the bathtub, and quick purification of hot water can be performed.

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 17 show an embodiment of a hot water purifying apparatus for a bathtub according to the present invention. FIG. 1 is a sectional view of the hot water purifying apparatus, FIG. 2 is an overall perspective view of the hot water purifying apparatus, and FIG. Is a front view of the unit cover, FIG. 4 is a rear view of the unit cover,
5 is a side view of the unit cover, FIG. 6 is a top view of the unit cover, FIG. 7 is a bottom view of the unit cover, FIG. 8 is a perspective view of the float, FIG. 9 is a front view of the unit body, and FIG. Rear view, FIG. 11 is a side view of the unit main body, FIG. 12 is a top view of the unit main body, FIG. 13 is a bottom view of the unit main body, FIG. 14 is an enlarged sectional view of a drain port portion, and FIG. FIG. 16 is an explanatory view of an open / closed state of an opening / closing lid, and FIG. 17 is an explanatory view of a method of attaching a hot water purifier to a bathtub.

The hot water purifying apparatus will be described in detail. As shown in FIGS. 1 and 2, a unit main body 1 of a tank unit 5 and a unit cover 2 detachably mounted on the unit main body 1 are shown. When used, it is fixed to the inner wall surface of the bathtub 4 as described later.

The unit cover 2 is shown in detail in FIGS. 3 to 8, and has a first opening 5A and a first opening 5A which form a long hole for sucking hot water 23 in the bathtub 4 into the hot water purifier. The two openings of the second opening 5B are separated by a predetermined distance W in the left-right direction.
It is drilled up and down across (FIG. 3). The length of the holes of the two openings 5A and 5B is regulated by the vertical sliding distance of floats 8A and 8B, which will be described later, provided on the respective back surfaces, and the first opening 5A located on the upper side. Of the unit cover 2 is at most half the total length of the unit cover 2 in the vertical direction, and the lower second opening 5B is formed at the lower end of the first opening 5A. Starting from the vicinity, the length is at most a half position to the lower end of the unit cover 2.

The lower edge of the hole of the first opening 5A located on the upper side and the upper edge of the hole of the second opening 5B located on the lower side are configured to overlap by a small distance when viewed from the lateral direction. During the dust collection operation described below, the level of the hot water in the bathtub is changed from the first opening 5A to the second opening 5B, or conversely, from the second opening 5B to the first opening 5A. At the time of switching, the suction of hot water from the opening is not interrupted.

On the back of the unit cover 2, a first
Of the guide rail 6₁, 6_Two
And the skirt portion 7A is guided by the first opening.
5A with an inverted L-shaped section that slides vertically to cover 5A
When the first float 8A (see FIG. 8) is attached
In both cases, a guide rail is provided in the second opening 5B.
6 _Two, 6_ThreeAnd the skirt portion 7B is
Cross section that slides vertically to cover the opening 5B
An L-shaped second float 8B is attached. This
Floats 8A and 8B are lighter in specific gravity than water, and
Materials that do not corrode when wet, such as foam
Made of polypropylene or FRP (reinforced plastic)
Have been.

The edges 10A and 10B on the adjacent sides of the horizontal projection 9A of the first float 8A and the horizontal projection 9B of the second float 8B abut each other when sliding in the vertical direction. So that the first float 8A can be inserted into the movement locus of the other party.
Are lowered to the lowermost end of the first opening 5A, and the second float 8B is raised to the uppermost end of the second opening 5B. Is pushed up or down to prevent the floats 8A and 8B from sticking to the back surface of the unit cover 2 or the like due to the surface tension or water pressure of hot water.

Further, in this embodiment, as shown in FIG. 8, the skirt 7A (7B) of the float 8A (8B)
A plurality of small hemispherical projections 11 having a height of, for example, about 0.5 mm are formed on the sliding surface of the cover, and the skirt 7A (7B) is slid in a point contact state with the unit cover 2 and The skirt 7A (7B) is provided with cuts 12 at various places to release the pressure of the hot water flowing from the opening 5A (5B), and the abutment operation between the horizontal projecting pieces 9A, 9B of the float. In conjunction with this, the float is designed to make the movement even better.

On the other hand, the unit main body 1 includes FIGS.
As shown in detail in FIG. 1, a drain port 13 is formed at the lower end portion for communicating between the inside of the hot water purifier and the inside of the bathtub. 14 are attached. The opening / closing lid 14 is made of a material having a higher specific gravity than water, such as stainless steel, copper, or aluminum.

When the waste water is not collected by the hot water purifier, the open / close lid 14 hangs down due to its own weight while swinging with hot water (see FIG. 16A). It works so that the water level in the hot water and the hot water purifier always becomes the same,
Garbage, such as dirt and hair, remaining in the hot water purifier can easily enter the bathtub through the drain port 13.

When the circulating pump is turned at the time of collecting the garbage, which will be described later, the circulating pump is rotated by the suction force so as to close the drain 13 (see FIG. 16B), and the inside of the hot and cold water purifier is further improved. Acts to maintain watertight. When the opening / closing lid 14 is closed, the suction force from the openings 5A and 5B is increased, and it becomes easier to collect dust such as hair and dirt floating on the surface of the bath.

Also, at the time of drainage, when the level of hot water in the bathtub becomes lower than the lower edge position of the second opening 5B, the second float 8B descends to the lowermost end, and the skirt 7B At the lower end, the lever 15 of the opening / closing lid 14 is pushed open, and pivots so as to open the drain port 13 (see FIG. 16C), and the hot water stored in the hot water purifier through the opened drain port 13 is removed. It acts to drain the water into the bathtub immediately.

Further, when there is a hot water surface below the second opening 5B, since the open / close lid 14 is opened and the hot water 23 in the bathtub 4 enters the hot water purifier through the drain port 13, the circulation pump There is no possibility that the air is sucked when the suction is performed in the step and the circulation becomes impossible. Second opening 5
The lower end of B is above a suction port 16 for sucking hot water in the hot water purifier to the outside, and corresponds to a safe water level for recirculating hot water in the bathtub. Although bathing may be enjoyed at a water level below the opening 5B of the second and above the suction port, even in such a case, the second float 8B goes down to open the opening / closing lid 14 and open the water draining port 13. Since it is open, the hot water in the bathtub can be sucked from here to perform purification.

The unit main body 1 has a first or second opening 5A, 5A at the lower end opposite to the drain port 13.
A suction port 16 for sucking hot water drawn into the hot water purifier from B to the hot water supply device side is formed,
Discharge port 1 for returning purified hot water to bathtub 4 again
7 are formed (see FIG. 15). The positions and shapes of the suction port 16 and the discharge port 17 are formed in conformity with the circulation fitting 22 (see FIG. 1) provided on the inner wall surface of the bathtub 4.

It is preferable that the discharge port 17 is formed slightly downward, for example, about 30 degrees below horizontal, as shown in the figure. As a result, the hot and cold water spouted from the discharge port 17 causes convection in the bath tub, and dust such as dirt and hair in the bath tub floats on the surface of the hot water, thereby further facilitating the collection of the dust.

A suction cup mounting hole 18 for mounting the suction cup 3 for fixing (see FIG. 1) is formed at the upper left and right positions of the unit cover 2, and the base end of the suction cup 3 for fixing is attached to this hole. By adsorbing on the inner wall, the hot water purifier can be stably held along the inner wall of the bathtub. 19 and 20 are reinforcing ribs.

When using the hot water purifier, the hot water purifier is attached to the inner wall of the existing bathtub 4 as shown in FIG. That is, since the filter 21 is screwed to the outermost surface of the circulating metal fitting 22 provided on the inner wall of the existing bathtub 4 with the screw 25, the screw 25 is first turned to filter the filter 21. Remove 21. Then, in this state, the fixing suction cup 3 attached to the back of the unit main body is sucked and fixed to the inner wall of the bathtub 4 (see FIG. 1), and the suction of the lower part of the unit main body constituting the connecting means to the circulation fitting is performed. The port 16 and the discharge port 17 are brought into contact with the circulation port of the circulation fitting 22. In this state,
The circulation fitting 22 and the unit body 1 are fixed by the mounting screw 26.
After the connection, the filter 21 which has been removed is covered, screwed with the screw 25, and fixed to the inner wall of the bathtub 4.

FIG. 18 shows an overall circuit diagram when the hot water purifier of the present invention is attached to an existing bathtub. In the figure, reference numeral 51 denotes a hot water supply device provided with a bathtub for performing hot water supply and additional heating. In addition,
In FIG. 18, for easy understanding, the hot water purifier of the present invention mounted on the inner wall of the bathtub is also simplified by a diagram like the hot water supply device 51.

Prior to the description of the circuit operation of FIG. 18, the configuration of the hot water supply equipment 51 will be described. 52 is a hot water supply heat exchanger, 53 is a reheating heat exchanger, and is a hot water supply heat exchanger 52. The water inlet side of the water inlet sensor 54, the water inlet temperature sensor 5
5 and connected to the external water supply pipe 56,
It is connected to a hopper 58 via a flow path opening / closing valve 57. On the other hand, the hot water outlet side of the hot water supply heat exchanger 52 is connected to an external hot water tap (not shown) such as a faucet via a hot water temperature sensor 59, a mixing valve 60, a mixed hot water temperature sensor 61, and an external hot water pipe 62. And is connected to a hopper 58 via a flow path opening / closing valve 63.

The first tapping pipe 64 of the hopper 58 is connected to the discharge port 17 of the bathtub 4 via a water meter 65, a flow path switching valve 66, and a going pipe 67. The second tapping pipe 68 of the hopper 58 includes a flow path switching valve 69, a flow path switching valve 70,
It is connected to the suction port 16 of the tank unit 5 of the bathtub 4 via a pressure type water level sensor 71, a temperature sensor 72, and a return pipe 73. The pressure type water level sensor 71 detects the water level in the bathtub 4 from the water pressure, and the temperature sensor 72 detects the temperature of the hot water in the bathtub 4.

On the other hand, the tap hole side 74 of the additional heat exchanger 53
Is connected to a going pipe 67 via a flow path switching valve 66. The water inlet side 75 of the additional heat exchanger 53 is provided with a sterilizer 76.
And a flow path switching valve 78, a flowing water switch 79, and a recirculating pump 8 for additional heating.
0, connected to the return pipe 73 via the flow path switching valve 70. Further, the outlet side 81 of the filter 77 is connected to the flow path switching valve 7.
8 and connected to an external drain pipe 83 via a flow path opening / closing valve 82.

Next, the dust collection operation will be described with reference to FIGS. 18, 19, and 20. FIG. 19 is an explanatory view of the dust collecting operation when the hot water 23 is stretched to the vicinity of the first opening 5A, and FIG. 20 is a dust collecting operation when the hot water 23 falls to the vicinity of the second opening 5B. FIG.

In FIG. 18, after setting a hot water temperature and a water level by operating a remote control device (not shown) attached to the hot water supply device 51, pressing an automatic switch of the remote control starts hot water supply and starts hot water supply. Is sent to the hot water supply heat exchanger 52 via the external water supply pipe 56, the incoming water temperature sensor 55, and the incoming water amount sensor 54. After the hot water is heated to a predetermined temperature in the hot water heat exchanger 52, the hot water is adjusted to the set temperature by the hot water temperature sensor 59, the mixing valve 60, and the hot water temperature sensor 61, and the flow path on-off valve 63 and the hopper 58 The pouring of water into the bathtub 4 is started from the suction port 16 via the water meter 65, the flow path switching valves 69 and 70, the pressure type water level sensor 71, the temperature sensor 72, and the return pipe 73.

When the air accumulated in the return pipe 73 is discharged by this pouring, the flow path switching valves 69, 70 and the flow path switching valve 66 are switched, and the hopper 58, the water meter 65, the flow path switching valve 66 Then, the hot water is poured into the bathtub 4 from the discharge port 17 via the going pipe 67.

At this time, the opening / closing lid 14 as the opening / closing plate provided at the drain port 13 of the hot water purifier is pushed by its own weight of the second float 8B descending to the lowermost position. ), The level of hot water in the bathtub 4 rises due to pouring, and when the water level reaches the position of the drain port 13, the hot water flows into the tank unit 5 from the drain port 13. At the same time, the level of the hot water in the tank unit 5 also rises at the same time as the level of the hot water 23 in the bathtub rises. Therefore, since the water level of the hot water 23 in the bathtub 4 always matches the water level of the hot water in the trash collection chamber 5, it is not necessary to monitor the water level in the hot water purifier, and it is necessary to provide a water level sensor and the like in the hot water purifier. There is no.

The pressure type water level sensor 71 detects that the water level of the hot water 23 in the bathtub 4 has reached the set full position by pouring, and the hot water supply is stopped. After the hot water supply to the bathtub 4 is completed in this way, additional heating for maintaining the hot water 23 in the bathtub 4 at the set temperature is started. The bathtub hot water purifier according to the embodiment performs the operation of collecting dirt such as dirt and hair floating on the surface of the hot water at the same time as the additional heating as described below.

That is, when the reheating is started by the automatic operation or manual operation of the hot water supply device 51, the circulation pump 80 is operated and the burner of the reheating heat exchanger 53 is ignited. As a result, the hot water in the hot water purifier
Suction port 16, return pipe 73, temperature sensor 72, pressure type water level sensor 71, flow path switching valve 70, circulation pump 80, flowing water switch 79, flow path switching valve 78, filter 77, sterilizer 76
After being sent to the additional heating heat exchanger 53 via the heater and heated to the set temperature, the outlet 17 via the hot water outlet side 74 of the additional heating heat exchanger 53, the flow path switching valve 66, and the going pipe 67. Then, the water is returned to the bath 4 again.

When the circulation pump 80 is activated to start additional heating, the level of the hot water in the tank unit 5 falls according to the suction flow rate of the circulation pump 80 as shown in FIG. A drop is created between the hot water 23 and the hot water 23. Therefore, the hot water 23 in the bathtub 4 flows into the hot water purifier from the first opening 5A due to the head. At this time, the lower portion of the first opening 5A than the surface of the hot water is blocked by the skirt 7A of the first float 8A, and the entire surface of the second opening 5B submerged in the hot water is the second surface. Is blocked by the skirt 7B of the float 8B.
The surface water of the hot water 23 in the bathtub 4 efficiently flows into the hot water purifier, and dirt such as dirt and hair floating on the hot water surface is efficiently collected.

In this embodiment, as shown in FIG. 8, the skirt 7A (7B) of the float 8A (8B)
A small projection 11 for making a point contact with the rear surface of the unit cover 2 is formed on the sliding surface of the cover, and a slight gap is formed between the skirt portion and the rear surface of the cover by the projection 11. However, this projection 11 has a height of 0.5
Since the projections are extremely small, such as about mm, the gaps are also extremely small, so that a large amount of hot water does not flow through the gaps and adversely affect the dust suction action.

The hot and cold water sucked into the hot water purifier is filtered out of the filter 21 attached to the suction port 16 for large dust such as hair among the dust mixed therein.
And small dust such as dirt and dandruff which could not be removed by the filter 21.
Then, it is sterilized by the sterilizer 76, heated by the additional heat exchanger 53, and returned to the bathtub 4 from the discharge port 17 again.

On the other hand, as shown in FIG. 20, when the water level of the hot water 23 in the bathtub 4 drops to the vicinity of the second opening 5B, the dust collection process is performed in place of the first opening 5A. This is performed through the second opening 5B. That is, when the water level of the hot water 23 in the bathtub 4 drops to the vicinity of the second opening 5B, a drop occurs between the hot water 23 in the bathtub 4 and the hot water in the hot water purifier as shown in FIG. The hot water 23 in the second
Through the opening 5B, and the waste is collected and sterilized in the same manner as described above. In this case, since the lower portion of the second opening 5B below the surface of the hot water is blocked by the skirt portion 7B, the hot water 23 in the bathtub 4 flows intensively into the hot water purifier and floats on the hot surface. Garbage such as dirt and hair can be efficiently collected.

As described above, by dividing the opening for collecting dust provided on the unit cover 2 into two upper and lower portions, the water level of the hot water 23 in the bathtub 4 drops, and the dust can be collected from the upper opening 5A. Even if it is exhausted, dust can be continuously collected from the lower opening 5B, and dust can be collected to a lower water level.

During the dust collection operation, the opening / closing lid 14 provided at the drain port 13 is connected to the circulating pump 80.
As shown in FIG. 16 (B), the suction port 13 is rotated so as to close the drain port 13 by the suction force. Therefore, the inside of the hot and cold water purifier is maintained more watertight, and the suction power of the hot and cold water by the circulation pump 80 increases by that much, so that the dust in the bathtub can be more efficiently collected.

The discharge port 17 for recirculating the purified hot water
As shown in FIG. 15, it is preferable to attach the hot water so that the discharge direction is slightly lower than horizontal (for example, about 30 °). By attaching in such a direction, the hot water blown downward from the discharge port 17 causes convection in the bathtub 4, so that dirt such as dirt or hair sinking at the bottom of the bathtub rises to the surface of the water, and the waste is collected. More can be promoted.

When the circulation pump 80 is stopped to stop the reheating, the opening / closing lid 14 hangs down due to its own weight, and the drain port 13 is opened. The hot water in the bathtub 4 and the hot water in the hot water purifier quickly return to the same water level. At this time, dirt such as dirt and hair which are sucked into the hot and cold water purifier and remain are removed from the skirt portions 7A and 7B of the first and second floats 8A and 8B and the float floating on the water surface position. Since the horizontal protruding pieces 9A or 9B prevent the water from flowing into the bathtub 4 side, it does not flow out to the bathtub 4 side, which is very sanitary.

When the level of the hot water 23 in the bathtub 4 changes from near the lower end of the first opening 5A to near the upper end of the second opening 5B during the dust collection operation. The first float 8A provided in the opening 5A is lowered to the lowermost position, while the second float 8B provided in the second opening 5B is raised to the uppermost position.

For this reason, when the water level decreases, the horizontal projection 9A of the first float 8A descending from above.
Edge 10A of the second float 8B contacts the edge 10B of the horizontal protrusion 9B of the second float 8B, acts to push down the second float 8B, and when the water level rises, from the bottom side The rising second float 8B is the first float 8
Acts to push A up.

Therefore, even when the first or second floats 8A and 8B are stuck to the back surface of the unit cover 2 due to the surface tension or water pressure of hot water, one float is changed to the other with the change in water level. Since it acts to push down or push up the float, it is possible to prevent the float from sticking to the back of the cover and becoming immobile.

In addition, as shown in FIG. 8, cut portions 12 are formed in the skirt portions 7A, 7B of the floats 8A, 8B, and the first and second openings 5A, 5B are formed.
B, the pressure of the water to be sucked from
More escape, further preventing the float from sticking to the back of the cover and getting stuck.

Next, the operation of draining the hot and cold water 23 set in the bathtub 4 will be described. When the drain port 24 (see FIG. 18) of the bathtub 4 is opened, for example, after the end of bathing, the hot water in the bathtub 4 and the tank unit 5 is drained from the drain port 24, and the water level is changed to the second opening. 5B, the second float 8B descends to the lowermost position of the second opening 5B, and the lower end of the skirt 7B opens and closes the lid 1.
4 is pushed, and the opening / closing lid 14 is rotated to open the drain port 13 (see FIG. 16C).

For this reason, the hot and cold water that has accumulated to the end of the lower part of the tank unit 5 is also discharged through the drain port 13 into the bathtub 4.
The water immediately flows out to the side, and at the same time when the drainage of the hot water 23 in the bathtub 4 is completed, the drainage of the hot water in the hot water purifier is also completed. Therefore, it is not necessary to remove the hot water purifier in order to drain the hot water accumulated in the hot water purifier.

Further, since the hot and cold water in the hot and cold water purifier is discharged through the water drain port 13, the hot and cold water does not remain in the hot and cold water purifier, which is hygienic. Since there is no need to provide a drain valve or the like, the hot and cold water purifier can be made compact.

Further, the first and second floats 8A and 8B
As when using those cross cumbersome L-shaped float 8A of the cross cumbersome L-shaped skirt portion 7A of 8B, since 7B the guide rail ₆₁ through ₃ can only be easily assembled plug into portions, the float The mounting structure of the part can be further simplified, and the bathtub can be cleaned more easily.

Although the above embodiment has been described in connection with the case where the dust collecting operation is performed simultaneously with the additional heating, if the collecting operation is performed without igniting the burner of the additional heat exchanger 53, the dust can be collected. You can only do it. Further, in the above-described embodiment, the case where only two openings are provided has been described, but the number of openings may be one, or three.
More than one may be provided. The larger the number of openings, the more efficiently the water in the bathtub can be sucked down to a lower water level.

[0058]

As described above, according to the present invention,
Since the tank unit is installed in the bathtub and connected to the circulation port to purify the hot water, the hot water can be purified using the existing bathtub without changing the form of the bathtub at all.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a hot and cold water purifying apparatus for a bathtub according to the present invention.

FIG. 2 is an overall perspective view of a bath water purifying apparatus.

FIG. 3 is a front view showing a unit cover.

FIG. 4 is a rear view showing the unit cover.

FIG. 5 is a side view showing a unit cover.

FIG. 6 is a top view showing the unit cover.

FIG. 7 is a bottom view showing the unit cover.

FIG. 8 is a perspective view showing a float.

FIG. 9 is a front view showing a unit main body.

FIG. 10 is a rear view showing the unit body.

FIG. 11 is a side view showing a unit main body.

FIG. 12 is a top view showing the unit body.

FIG. 13 is a bottom view showing the unit main body.

FIG. 14 is an enlarged sectional view showing a drain port portion.

FIG. 15 is an enlarged sectional view showing a suction port and a discharge port on the lower end side of the unit body.

FIG. 16 is an explanatory diagram showing the open / closed state of the open / close lid.

FIG. 17 is an explanatory view showing attachment of a tank unit to a bathtub in the bathtub hot water purifier.

FIG. 18 is a diagram illustrating a connection state between a hot water purifier for a bathtub and a hot water supply device.

FIG. 19 is an explanatory diagram of the dust collection operation when the water level is near the first opening.

FIG. 20 is an explanatory diagram of the dust collection operation when the water level is near the second opening.

FIG. 21 is an explanatory diagram showing a hot water purification bathtub according to the prior application.

FIG. 22 is a perspective view showing a cover of a hot water purification bathtub according to the prior application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit main body 2 Unit cover 4 Bath tub 5 Tank unit 5A 1st opening 5B 2nd opening 9A 1st horizontal protruding piece 9B 2nd horizontal protruding piece 14 Opening / closing lid 22 Circulation fitting 23 Inside bathtub Hot water 67 Outgoing pipe 73 Return pipe 76 Sterilizer 77 Filter 80 Circulating pump

Claims (2)

[Claims] 1. A tank unit installed on an inner wall portion of a bathtub and connected to a circulation port for taking out hot water from the bathtub, a tank unit having a maximum water level of the bathtub and a water level at which the circulation port is submerged. An elongate hole which is opened to the upper and lower width to take hot water in the bathtub into the tank unit side, and which is provided in the tank unit and moves up and down in response to water level fluctuation of the bathtub to open and close the elongate hole portion An opening / closing plate, and a purifier for purifying the hot and cold water that has entered the tank unit through the circulation port to the outside of the bath tub, and then returning the hot water to the inside of the bath tub. . 2. The water level of the tank unit, when the water level does not change on the bathtub side, matches the water level in the bathtub,
2. The bath water purifier according to claim 1, wherein when the water level changes on the bathtub side, the water level is changed in accordance with the change.